<!DOCTYPE html>
<html>
<head>
	<title></title>
	<script type="text/javascript" src="./underscore-min.js"></script>
</head>
<body>

</body>
</html>

<script type="text/javascript">
	var x = {a:1, b:2, c:555, d:"fff"}
	x = _.each(x, function(value, key, list){
	
		if ( typeof(value) == "number") {
			return value * 2;
		}else {
			return value;
		}

	
	});
	console.log(x);

</script>